Abstract
The influence of saline stress on the mycelial growth, sporulation and germination of conidia or sclerotia was studiedin vitro on the following rhizosphere fungi of sugarbeet (Beta vulgaris) isolated in Egypt and Germany:Fusarium avenaceum. F. culmorum, F. diversisporum, F. equiseti, F. oxysporum f. sp.betae, F. verticillioides. Rhizopus nigricans, Sclerotinia sclerotiorum, Botrytis cinerea, Rhizoctonia solani andSclerotium rolfsii.
A stimulation in mycelial growth when adding salt to the media was observed inF. avenaceum, F. culmorum, F. diversisporum, F. equiseti, F. oxysporum f. sp.betae, R. solani andS. rolfsii; while the growth rate was reduced by increasing salinity inF. verticillioides, R. nigricans, B. cinerea andS. sclerotiorum. Sporulation in most cases could be stimulated with an exception ofR. nigricans, B. cinerea, F. culmorum andF. verticillioides. Germination of conidia ofF. equiseti andF. oxysporum f. sp.betae was stimulated by increasing salt concentrations. Salinity stress had an inhibiting effect on the germination of conidia or sclerotia with all other fungi investigated. The production of slerotia decreased over 50% whenR. solani, S. rolfsii andS. sclerotiorum were exposed to increasing salt concentrations.
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El-Abyad, M.S., Hindorf, H. & Rizk, M.A. Impact of salinity stress on soil-borne fungi of sugarbeet. Plant Soil 110, 33–37 (1988). https://doi.org/10.1007/BF02143536
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DOI: https://doi.org/10.1007/BF02143536